11644545033 has 12 divisors (see below), whose sum is σ = 18348980208. Its totient is φ = 7057299960.

The previous prime is 11644545001. The next prime is 11644545047. The reversal of 11644545033 is 33054544611.

11644545033 is a `hidden beast` number, since 1 + 1 + 644 + 5 + 4 + 5 + 0 + 3 + 3 = 666.

It is not a de Polignac number, because 11644545033 - 2⁵ = 11644545001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11644543033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58810735 + ... + 58810932.

It is an arithmetic number, because the mean of its divisors is an integer number (1529081684).

Almost surely, 2^11644545033 is an apocalyptic number.

It is an amenable number.

11644545033 is a deficient number, since it is larger than the sum of its proper divisors (6704435175).

11644545033 is a wasteful number, since it uses less digits than its factorization.

11644545033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117621684 (or 117621681 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 11644545033 in words is "eleven billion, six hundred forty-four million, five hundred forty-five thousand, thirty-three".